Chapter 5. Function Block Diagram (FBD)
266 PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual GFK-2950C
5.11 Timers
This section describes the PACSystems timing functions that are implemented in the FBD language.
5.11.1 Built-in Timer Function Blocks
These function blocks use WORD Array instance data. The parameter that appears above the
function block is a one-dimensional, three-word array in %R, %W, %P, %L, or symbolic memory that
the timer uses to store its current value, preset value and control word.
Off Delay Timer. The timer's Current Value (CV) resets to zero when its enable
parameter (EN) is set to ON.. CV increments while EN is OFF. When CV=PV (Preset
Value), ENO is set to OFF until EN is set to ON again.
Other OFDT functions:
OFDT_SEC
OFDT_TENTHS
OFDT_THOUS
For details, refer to Timers in Chapter 4.
On Delay Stopwatch Timer. Retentive on delay timer. Increments while EN is ON and
holds its value when EN is OFF.
ONDTR_SEC
ONDTR_TENTHS
ONDTR_THOUS
For details, refer to Timers in Chapter 4.
On Delay Timer. Simple on delay timer. Increments while EN is ON and resets to zero
when EN is OFF.
TMR_SEC
TMR_TENTHS
TMR_THOUS
For details, refer to Timers in Chapter 4.
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